Visitors view a model of China's home-grown super-large-diameter shield tunneling machine "Jinghua" at the booth of China Railway Construction Corporation (CRCC) in the Advanced Manufacturing Chain exhibition area of the second China International Supply Chain Expo in Beijing, capital of China, Nov. 27, 2024. Themed "Connecting the World for a Shared Future," the expo, hosted by the China Council for the Promotion of International Trade, kicked off in Beijing on Tuesday. (Xinhua/Zhang Chenlin)